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I have an impression that the PC 9 has a slight cant to the left when mated to the receiver resulting in extended windage groups that the Vortex Crossfire can not correct. Placing a 9 mm laser in the PC 9 chamber looks like the barrel is offset to the left. The Ruger barrel/receiver adjustment screw is snug. Any ideas? Maybe forgo the Crossfire on the receiver and find a rail to a fix the Crossfire to the barrel? Thoughts? Thanks.